Spring-balance scale.



110.7%,274. PATBNTED APR.5,1904. o. 0. OZIAS.

SPRING BALANCE SGALE.

APPLICATION FILED JUNE 27, 1902. RENEWED FEB. 18, 1904.

v H0 MODEL. I 2 SHEETS-SHEET 1.

1n: mom's PEYKRS cu. morau'mon WASHINGYON, n. c.

H0 MODEL.

PATENTBD APR. 5, 1904. 0. o. ozms. K

SPRING BALANCE SCALE.

APPLICATION FILED JUNE 27, 1902. RENEWED FEB. 18. 1904.

' 2 SHEETS-SHEET 2.

avwwwtoz in; km

retested A ril 5, loot.

ORANGE O. OZIAS, OF DAYTON, OHIO.

SPRlNG-BALANGE some.

SPECIFICATION forming part of Letters Patent No. 756,274, dated April 5,1904.

' Application filed June 2'7, 1902. Renewed February 18 1904. Serial No.194,298. (lllo model.)

To a whom, it may concern:

. Be it known that 1, ORANGE 0. Guns, of Dayton, in the county ofMontgomery, State of Ohio, have invented certain new and usefulImprovements in Spring-Balance Scales; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming a part of thisspecification, and to the letters of reference marked thereon.

This invention relates to improvements in spring-balance scales orscales wherein the goods to be weighed are counterbalanced by suitablesprings and the extension of said springs under the influence of theweight of the goods determines the weight, the Weight indications beingread from a suitable indicator controlledby the springs. In such scalesit is very essential that the goods-support and springs shall besuspended freely, so as to be capable of aslight transverse swing in anydirection, and that no extraneous influence shall operate upon thesprings, support, or goods which will in any degree change the finalbalancing-point. At the same time it is highly desirable and in manytypes of scale absolutely essential that sudden or violent movements inthe direction of the extension and contraction of the springs should becounteracted and modified, so as to avoid injury to the scale parts andto reduce'vibration and bring the indicating mechanism and :other movingparts to,

rest quickly.

The objectsof the present invention are to accomplish these desirableends b simple and cheap mechanical means, to whic 1 end the inventionconsists in providing a pneumatic dash-pot-co'ntrolling mechanismsupported to swing transversely in any direction, and, fur: ther, in amechanism of this character in which the angular movement or swing shallsubstantially coincide with the angular movement or swing of thecounter-balancingsprings.

The invention further consists in certain novel details of constructionand combinations of parts, all as will be hereinafter described, andpointed out particularly in the appended claims.

Referring to the accompanying drawings,

Figure l is an elevation of a spring-balance scale embodying the presentinvention, with parts broken away and in section to illustrate theinternal construction. Fig. 2 is a view corresponding to Fig. 1 with thesprings extended as by a heavy load. Fig. 3 is an end elevation withthejoint between the pistonrod and runner in section. Fig. 4, is avertical section taken outside of one of the end sprlings and lookingtoward the body of the sea e.

In the drawings the transverse swing is indicated by dotted lines, andthe type of scale shown, it will be understood, is simply illustrative,as the invention is applicable to any type of scale where a runner orload-support having aswing transverse to the line of spring extension isemployed.

The letter A in said drawings indicates the casing or frame; B, therunner or goods-support; 0, the springs carrying the goods-support andthemselves hung near the top of the casing, so as to be capable of aslight swing in unison with the runner. The runner is geared orconnected with the indicator 1) by rackand-pinion connections E or otherusual connecting mechanism, whereby the indicator will be moved inunison with the runner, or the runner itself may constitute anindicator, as in some types of scales.

' Arranged parallel with the springs and connected with the frame orcasing and runner at points corresponding to the points of suspensionand connection of the springs are the pneumatic dash-pot-controllingdevices. Two of these devices are shown, although any desired number maybe employed, due consideration being had in the arrangement to halancingup the strains, so as to avoid lateral deflection. The cylinders F ofthe controllers are hung at their closed ends vby connections permittingof a swinging movement in any direction.such, for instance, as theuniversal joint G, which is one of the Well-known types of universaljoints with pivots arranged at right angles to each other, although anyother well-known and equivalent joint to permit of a slight universalmovement may be 'of its substituted- The piston H, working in the rod M,which forms an extension of the spring and the runner, is alsopreferably somewhat loose, as shown at N in there may be no binding atthis point.

It will be observed that the distance between the pivotal connections ofthe cylinder and plunger-rod and the distance between the endconnections of the springs is approximately the same and varies insubstantially the same ratio. Thus the angular position of the dash-potgovernor corresponds to the angular position of the springs, regardlessof the,load or the swing of the runner, and at no moment is anytransverse or the dash-pot mechanism, because the axes of the cylinderand plunger-rod are always-in alinement, and the strain of the springsand load always act in a line corresponding to said axes.-

Having thus described my invention, what 1 claim as new, and desire tosecure by Letters Patent, is-- 1. In a spring-balance scale, thecombination of a vertically-movable runner for supporting the load andsprings supporting said runner, said springs and runner beingsuspendedto swing freely to a limited extent in any direction, of a governorcontrolling the vertical movements of the runner, embodying a pneumaticdash-pot cylinder, a plunger therein and a connecting-rod, said cylinderand connecting-rod being jointed one to a fixed support and the other tothe runner to swing in any direction in unison with the runner tomaintain an angular position approximately Fig. 4, in order that bindingstrain set up in corresponding to the angular position of the springs;substantially described.

2. In a spring-balance scale, the combination with the suspendedcounterbalancingsprings and runner suspended from said springs to have alimited swing in any direction, of a pneumatic dash-pot cylindersuspended to swing in any direction, a plunger in said cylinder, aplunger-rod rigidly connected with said plunger and jointed to therunner by a joint permitting it, to swing in any direction whereby theaxes of the cylinder and rod will be maintained in alinement;substantially .asdescribed.

3. In a spring-balance scale, the combination with the runner and itsconnterlmlancingsprings suspendedat their upper ends, from a fixedsupport, of the pneumatic dash-pot cylinder, plunger working therein andplungerrod rigidly connected with the plunger, said rodand cylinderbeing arranged parallel with the springs and jointed the one to thefixed support and the other to the runner at points corresponding to'the points of attachment of the springs whereby the parallelism of thesprings and dashrpot controllerwill be main tained regardless of theextension and lateral swing 'of the springs; substantially as described. i

4. In a spring-balance scale, the combination of a vertically-movablerunner for sup porting the load and springs supporting said runner, of agovernor controlling the vertical movements of the runner, embodying apneumatic dash-pot cylinder, a connecting-rod, said cylinder andconnecting-rod being jointed one toa fixed support and the other to therunner direction so as to maintain an angular position approximatelycorresponding tothe angular position of the springs.

ORANGE O. O-ZIAS.

to swing in any a plunger therein and

